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A biker is riding on a level, horizontal road. The coeffients of friction between her tires and the road are µs = 0.76 (static friction) and µk = 0.41 (kinetic friction). The total mass of the bike and biker is 76.5 kg. She is seated so that the normal force the road exerts on her front tire is 1/2 the normal force the road exerts on her back tire.What is the maximum acceleration of the bike and biker? Give your answer to three digits in units of m/s2.
In this problem, the frictional force on the front wheel is going to be much smaller (by a factor of about 50) than the other forces in the problem, so it can be ignored.
A 53.0-kg person jumps from rest from the top of a 10.0-m-high tower straight down into the water. Determine the magnitude of the average force that the water exerts on the diver
A pulley with a radius of 10.0 cm is mounted on an axle that passes through the center of the pulley. calculate the instantaneous angular speed of the pulley
Hail comes straight down at a mass rate of m/?t = 0.070 kg/s and an initial velocity of v0 = -14 m/s and strikes the roof perpendicularly. calculate the force exerted by the hail on the roof
Fred (mass 63kg ) is running with the football at a speed of 5.8m/s when he is met head-on by Brutus (mass 130kg ), who is moving at 4.1m/s. How far do they slide
it takes 60 joules of work to move 2 coloumbs of charge from point A to point B. what is the potential difference between point A and point B
In a television picture tube, electrons strike the screen after being accelerated from rest through a potential difference of 33 500 V. find the electron speed just before the electron strikes the screen
A diffraction grating with 750 slits/mm is illuminated by light that gives a first order diffraction angle of 34 degrees. What is the wavelength of the light
At a fabrication plant, a hot metal forging has a mass of 75 kg and a specific heat capacity of 430 J/(kg·°C). To harden it, the forging is immersed in 710 kg of oil that has a temperature of 32°C and a specific heat capacity of 2900 J/(kg·°C).
An electron with 184eV of kinetic energy in free space passes over a finite potential well 72eV deep that stretches from x=0 to \(x = 0.5\) nm. What is the electron's wavelength in free space
At a certain instant a particle (mass=0.5 kg) is moving in the +x direction with velocity 14 m/s. What is the magnitude of the momentum of the particle (in kg*m/s) at the end of this 0.15 second interval
A skyscraper has 550 windows that each have length 2.50m and height 2.0m when the temperature is 25C. the windows are made of single-pane glas of thickness 1/2"(1.27com) mounted in an aluminum frame.
A worker pulls horizontally on a crate on a rough horizontal floor, causing it to move forward with constant velocity. In the figure, force is the pull of the worker and force is the force of friction due to the floor.
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